Experiment showing dirt/dust

Experiment showing dirt/dust

Whilst doing some experimenting with my 70-200 F4 L lens, I noticed that 2 obvious spots were on the shots when I uploaded them to my computer.
I suspect it is dust on the front lens or filter rather than the sensor, as I can’t see them on any other shots apart from this series of experiments. The lens in question has internal focusing and zoom so the filter doesn’t budge.

Posted by phil wood photo on 2007-01-21 16:16:13

Tagged: , dust , zoom , experiment